Im still needing help. I have to convert Leica data (SR9400 - Ski 2.3) to Rinex format for testing in another software. I can read Rinex with ski. But i cant export rinex with it. This kind of thing is not clear at the books. Some times ago i have posted this question and Mr. Dolan told me: "Yes, Luscar, it is possible; at least with SKI-Pro 1.1 and up... In the data-processing window, right click on your data track and select "Export to RINEX." Many of the features of this software are hidden in context menus. Mike Dolan" Sorry, but i would like to get more details. Where is the that windows and what is and where are "data track" he is talking about? Could it be the lines that refer to Base and Rover data? I havent found "Export to Rinex" windows. Is it the same for all series 1.1 - 2.3 ?? Thanks a lot for help. Luscar